Air quality monitoring network

Ecology, EPA, tribes, and local clean air agencies maintain a network of air monitoring stations to measure air pollution in the state. Using continuous monitoring data, we can let you know when air pollution reaches unhealthy levels. Based on this information, people can adjust their daily activities to minimize unhealthy effects.

The network also measures atmospheric data (wind speed and direction, temperature, relative humidity, and air pressure).

We use the Washington Air Quality Advisory, or WAQA, as a tool to advise people about air quality levels and when they are healthy or unhealthy. The pollutants included in WAQA are the same as those listed above, except lead.